1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portlet.ratings.action;
24  
25  import com.liferay.portal.kernel.json.JSONFactoryUtil;
26  import com.liferay.portal.kernel.json.JSONObject;
27  import com.liferay.portal.kernel.util.MathUtil;
28  import com.liferay.portal.kernel.util.ParamUtil;
29  import com.liferay.portal.struts.JSONAction;
30  import com.liferay.portlet.ratings.model.RatingsStats;
31  import com.liferay.portlet.ratings.service.RatingsEntryServiceUtil;
32  import com.liferay.portlet.ratings.service.RatingsStatsLocalServiceUtil;
33  
34  import javax.servlet.http.HttpServletRequest;
35  import javax.servlet.http.HttpServletResponse;
36  
37  import org.apache.struts.action.ActionForm;
38  import org.apache.struts.action.ActionMapping;
39  
40  /**
41   * <a href="RateEntryAction.java.html"><b><i>View Source</i></b></a>
42   *
43   * @author Brian Wing Shun Chan
44   */
45  public class RateEntryAction extends JSONAction {
46  
47      public String getJSON(
48              ActionMapping mapping, ActionForm form, HttpServletRequest request,
49              HttpServletResponse response)
50          throws Exception {
51  
52          String className = getClassName(request);
53          long classPK = getClassPK(request);
54          double score = ParamUtil.getDouble(request, "score");
55  
56          if (score == 0) {
57              RatingsEntryServiceUtil.deleteEntry(className, classPK);
58          }
59          else {
60              RatingsEntryServiceUtil.updateEntry(className, classPK, score);
61          }
62  
63          RatingsStats stats = RatingsStatsLocalServiceUtil.getStats(
64              className, classPK);
65  
66          double averageScore = MathUtil.format(stats.getAverageScore(), 1, 1);
67  
68          JSONObject jsonObj = JSONFactoryUtil.createJSONObject();
69  
70          jsonObj.put("totalEntries", stats.getTotalEntries());
71          jsonObj.put("totalScore", stats.getTotalScore());
72          jsonObj.put("averageScore", averageScore);
73  
74          return jsonObj.toString();
75      }
76  
77      protected String getClassName(HttpServletRequest request) {
78          return ParamUtil.getString(request, "className");
79      }
80  
81      protected long getClassPK(HttpServletRequest request) {
82          return ParamUtil.getLong(request, "classPK");
83      }
84  
85  }